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4 Sheets--Sheet 1.

O. F. ANNAN. Paper Drier.

Patented Oct. 26,1880.

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4 Sheets-Sheet 2. U. P. ANNAN. Paper Drier No. 233,590. ed'0ct; 26,1880.

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4 Sheets--Sheet 4;

O. F. ANNAN. Paper Drier.

No. 233,590. Patented Oct. 26,1880.

Q o M W H [W W O o c O E h a c 0 o \(i v A Wilqe 55E 5.

UNITED STATES PATENT Erica.

CHARLES F. ANNAN, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENT, TO THE EASTERN PAPER BAG COMPANY.

DRIER.

SPECIFICATION formingpart of Letters Patent No. 233,590, dated October 26, 1880. Application filed February 3, 1879.

To all whom it may concern Be it known that I, CHAS. F. ANNAN, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvementin Mechanism for Drying Paper or other Tubes, of

which the following description, in connection with the accompanying drawings, is a specification.

This invention relates to mechanism for drying paper or other tubes for bags, or for other purposes for which a drying-cylinder is applicable.

This apparatus or machine for drying, as embodied in this invention, is composed of two large wheels connected at their peripheries by metal plates separated to form a steam-chamber, and about the wheels are arranged sets of rollers to sustain an endless apron or belt, and sets of cords to receive the article to be dried at one end of and carry it substantially about the machine and deliver it at that end of the machine opposite where the article was received.

Figure 1 represents, in side elevation, one of my improved drying-machines; Fig. 2, a longitudinal vertical section thereof; Fig. 3, a plan View; Fig. 4, a partial cross-section and Figs. 5 and 6, sectional details, showing the construction of parts to provide for the dis- 0 charge of water of condensation from the cylindrical chamber.

The two large wheels at, composing the ends of the rotating cylinder, are attached to a shaft, 1), having its bearings upon friction-rollers c. The said shaft has a toothed wheel, 0, which is engaged and rotated by means of a pinion upon the inner end of a short shaft, (1, provided with a ratchet-wheel,f, engaged by a pawl, y, connected with and carried by the driving-pulley 40 h, set in motion byasuitable driving-belt. By

means of this pawl the driving-wheel may be disconnected from the shaft d, and the wheels a and cylinder may be turned freely in either direction, thereby obviating removing the 5 driving-belt from the pulley h.

The peripheries of the wheels at are each provided, preferably, with a V-shaped annular groove, i (see Fig. 4,) the rims j with V- shaped projections,and between the said wheels and rims, at opposite sides of the machine,

are placed, preferably, first, a copper plate, 70, for the outside of the cylinder, and, second, a metal plate, I, for the inside of the cylinder, the latter plate being separated from theformer a distance of three-fourths of an inch, more or less, to form a steam-chamber, p, to enable the cylinder to be heated to dry the tubes, or it may be paper bags or other articles.

The V-shaped projections on the rims, when they are shrunk or fitted closely down upon the plates I, held between the rims and peripheries of the wheels, force the two plates to assume the V form and hold and incorporate them firmly together, making a steam-tight joint. The edges of the plates, as shown in 6 Fig. 4, will preferably be flanged outside the rims and wheels, as at 2 3.

Steam is introduced into the chamber between the two plates forming the revolving cylinder by means of a pipe, m, which extends 70 through a stuffing-box, n, fitted into the hollow outer end of shaft I), and from the said shaft, back of toothed wheel 0, the steam passes into a pipe, q, connected with the said chamber 19, and a pipe, 1, connected with the inner plate, I, (see Fig. 6,) next to a V-formed. partition, s, in the chamber, extends to the journal b at the opposite side of the machine, where the water of condensation is discharged through a pipe, a, connected with the saidjournal by a stuffing-box.

About the periphery of this rotating dryingcylinder, and in adjustable bearings, are held a series of blanket-rolls, a b c d e f over which and about the cylinder is placed and kept taut an endless belt or apron, 1 extended to a pair of rolls, 71, the said apron acting to conduct paper tubes or bags or other articles to, against, and about the heated cylinder.

A set of cord or tape rollers, k i j and rollor 6 guide and direct certain cords or tapes m above the endless apron at the top of the machine, to carry the paper bags or tube from one end back to the other end of the machine above its top portion, delivering them upon 5 the receiving-table Z and into a suitable box or receptacle.

Certain tapes or cords n extend in one direction from the roller j over sheaves 70 about the cylinder, next its outer surface, and between said surface and the paper, thence under roller f over the roller 3' to their place of starting. The cords 02? act to take the bags from the surface of the cylinder, pass them between the rollers f 9' and between the apron and the cords m to be taken and carried to the delivery-table l The plates 70 Z are preferably made of copper, as that metal has great heat-radiating powers.

The chamber 19 is made quite shallow,.the steam introduced therein is at a very low degree of pressure, and the water of condensation, by means of the partition 8, which. converges or centers at the delivering-pipe r, and which is attached at its longer edges to both plates by suitable rivets, t, is effectually and rapidly removed, thereby affording the steam full opportunity to render effectual all its contained heat.

It will be noticed that the material being dried comes in contact with the heated surface of the cylinder and passes from contact with the said cylinder at the same side thereof, and that the material being dried is then again carried forward above the cylinder upon the hot apron in the open air, which greatly assists in drying the said material, such as portions of tubes or bags, before being delivered in a pile.

The figures 71 are employed to designate a pair of rollers, which may be and are intended to be the same as correspondingly numbered rollers in other applications for United States Patents filed by me December 24, 1879, for a machine for folding paper into tubes, and for making tubular pieces of paper into bags.

One of these drying-machines will preferably form a connected part of each of the machines described in the said applications, to

continuously operate upon the products, tubes, or bags issuing from the said machines and dry the said products.

In Fig.3 I have shown a tube, for one bag as passing between rollers 71 to the apron and into the machine. The rollers over which the apron and cords are extended are held in adjustable bearings connected with the framework 00.

I claim 1. In a drying apparatus, the wheels and rims and the independent plates Z 76, bent to form a chamber, substantially as described.

2. The wheels of the drying-cylinder and the ri ms provided with grooves and projections, combined with the plates 1 7c, fitted into and held between the said grooved and projecting portions of the wheels and rims, substantially as described.

3. The combination, with the plates 17c, forming the chamber 19, of the diagonal fixed partition 8, adapted to direct the water of condensation out from the said chamber and through the pipe 1*, substantially as described.

4. The combination, with the drying-cylinder, the endless apron, and cords or belts M, of the system of cords m and their supportin g-rollers, to receive and carry the bags or articles to be dried about the cylinder and deliver them therefrom, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OHARLES I ANNAN.

Witnesses:

G. W. GREGORY, N. E. WHITNEY. 

